The correct answers are:
- The Christian Church gave the various people and tribes in Western Europe a cultural center;
- Attacks from Muslim nations helped band the various groups together with a common bond;
After the fall of the Western Roman Empire, Western Europe still managed to maintain a high level of cultural unity in the time that followed even though there lot of different people occupying this territory.
The two biggest reasons that this was able to happen were the Christian Church and the Muslim attacks. The Christian Church became the central figure in the politics and religion in Western Europe, and its interest was that there's peace between its followers, so they were trying to maintain that by uniting the people under the same religion, rules, way of life, and resolving the various disputes. The attacks from the Muslim Caliphates were another reasons, as they were seen as a common enemy, so the people were sticking together in order to be stronger, thus strengthening the unity in every sense of the word.
